Populations, Samples, & Inferences

Maria records random speeds from three different Internet providers in the table. Which company offers the fastest mean downloading speed?

• CityNet

• Able Cable

• Tel-N-Net

• Impossible to determine from the information given

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

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Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?

• 14 7th graders

• 28 7th graders

• 35 7th graders

• 42 7th graders

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CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3

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Trinity surveys students in her computer class about time spent on computers by students in her school. Fill in the blank to explain why this is not a representative sample. This is not a representative sample because students in computer class are _________ to use computers than other students.

• less likely

• equally likely

• more likely

Tags

CCSS.7.SP.A.1

Camira is comparing the growth of plants using two different fertilizers. Which statements about the box plots are true? Select all that apply.

• The median is group B is greater.

• According to the IQR, the variability in Group B is greater.

• Group B contained the plant with the least amount of growth.

• Group B contained the plant with the most amount of growth.

• Group A has the greater median.

Tags

CCSS.7.SP.B.3

CCSS.7.SP.B.4

The dot plot shows a random sample of the number of fish caught and released by 30 participants during a two-day fishing tournament. Select the inference that can be made based on the data collected.

• On average, most participants caught and released 5 or more fish.

• More participants caught 6 fish than any other number.

• The same participants who caught and released 1 fish the first day caught and released 1 fish on the second day.

• On average, participants caught and released more fish on Day 2.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The captain of the basketball team wants to determine where the team should go for their end-of-season celebration. Which of the following is a representative sample? Select all that apply.

• The students in her homeroom

• Players whose names are randomly selected from a hat

• The players in the starting lineup

• All players over 5 feet tall

• Every 5th player selected from an alphabetical roster of the team

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Which of the following measures of variability can be used to compare two data sets? Select all that apply.

• Mean

• Interquartile Range

• Median

• Range

• Mode

Tags

CCSS.7.SP.B.3

CCSS.7.SP.B.4

Ashley is comparing the distances that two electric cars can travel after the battery is fully charged. Based on the data, which car performs most consistently? Explain.

• Car A because the measures of center are smaller for Car A than for Car B.

• Car B because the measures of center are similar for Car B than for Car A.

• Car A because the measure of variability is smaller for Car A than for Car B.

• Car B because the measure of variability is smaller for Car B than for Car A.

Tags

CCSS.7.SP.B.3

CCSS.7.SP.B.4